mac80211: ignore frames between TDLS peers when operating as AP

If the AP receives actions frames destined for other peers, it may
mistakenly toggle BA-sessions from itself to a peer.
Ignore TDLS data packets as well - the AP should not handle them.

Signed-off-by: Arik Nemtsov <arikx.nemtsov@intel.com>
Reviewed-by: Emmanuel Grumbach <emmanuel.grumbach@intel.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

diff --git a/net/mac80211/rx.c b/net/mac80211/rx.c
index 5f572be..5a786d4 100644 (file)
--- a/net/mac80211/rx.c
+++ b/net/mac80211/rx.c
@@ -3129,6 +3129,14 @@ static bool prepare_for_handlers(struct ieee80211_rx_data *rx,
                        if (!ieee80211_is_beacon(hdr->frame_control))
                                return false;
                        status->rx_flags &= ~IEEE80211_RX_RA_MATCH;
+               } else if (!ieee80211_has_tods(hdr->frame_control)) {
+                       /* ignore data frames to TDLS-peers */
+                       if (ieee80211_is_data(hdr->frame_control))
+                               return false;
+                       /* ignore action frames to TDLS-peers */
+                       if (ieee80211_is_action(hdr->frame_control) &&
+                           !ether_addr_equal(bssid, hdr->addr1))
+                               return false;
                }
                break;
        case NL80211_IFTYPE_WDS: